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SQL Server 2012 Availability Groups
- 4. +
- 6. there’s just ONE problem
- 9. everyone has a right to SIMPLICITY
- 10. SQL Server 2012 Availability Groups
- 11. SQL Server 2012 Availability Groups
- 12. complex
- 13. I can’t blame them I felt the same way
- 14. I have to be intimidated
- 15. I have to be intimidated I actually know a few things
- 16. the complex is to start with what we already know the SECRET to understanding
- 17. SQL Server 2012 Availability Groups is NOT a new technology
- 18. SQL Server 2012 Availability Groups Failover Clustering Database Mirroring +
- 19. database mirroringhow it works
- 20. MirrorPrincipal WitnessApplication SQL Server SQL Server 2 2 4 51 3>2 >3 Mirror is always redoing – it remains current Commit log data log data database mirroringhow it works *database snapshot SYNCHRONOUS
- 21. MirrorPrincipal Application SQL Server SQL Server 2 2 4 51 3>2 >3 Mirror is always redoing – it remains current Commit log data log data database mirroringhow it works *database snapshot ASYNCHRONOUS
- 23. can either be an HA or DR solution *DATABASE protection DATABASE MIRRORING
- 24. involves sending streams of active transaction log records to and applying them on the mirror server DATABASE MIRRORING
- 25. operates on the physical layer (transaction log) DATABASE MIRRORING
- 26. operating modes high safety (synchronous) DATABASE MIRRORING
- 27. operating modes high performance (asynchronous) DATABASE MIRRORING
- 28. role switching automatic (requires a witness) DATABASE MIRRORING
- 30. failover clusteringhow it works
- 32. stop service
- 34. stop service wait service start service
- 35. Public Shared Storage failover clusteringhow it works
- 37. Public Shared Storage failover clusteringhow it works AD/DNS
- 38. WHYdo we even care
- 39. domain and DNS administrators we need to speak to the
- 40. SQL Server 2012 Availability Groups Failover Clustering Database Mirroring +
- 41. let’s talk about Availability Groups in the context of failover clustering
- 42. Node a server that is a member of a cluster
- 43. Node a server that is a member of a cluster
- 44. Resource a hardware, service or an entity that is hosted on a cluster basic building block in a cluster
- 46. storage
- 48. server nodes
- 50. virtual resourcevirtual server name virtual IP address virtual computer object Resource
- 51. virtual resourcevirtual server name virtual IP address virtual computer object Resource
- 52. a combination of resources that are managed as a UNIT Group Resource
- 54. Group Resource
- 55. Group Resource
- 56. Group Resource
- 57. moving a clustered resource from one node to another Failover
- 58. reliance of a resource on another resource Dependencies
- 59. *the minimum number of members of a deliberative assembly necessary to conduct the business of that group Quorum
- 66. Next Steps
- 67. Q & AQuestions